alamb commented on code in PR #1990:
URL: https://github.com/apache/arrow-datafusion/pull/1990#discussion_r846763109
##########
datafusion/core/src/datasource/listing/mod.rs:
##########
@@ -32,15 +32,26 @@ pub use table::{ListingOptions, ListingTable,
ListingTableConfig};
pub type PartitionedFileStream =
Pin<Box<dyn Stream<Item = Result<PartitionedFile>> + Send + Sync +
'static>>;
+/// File part identified by [start, end) positions.
Review Comment:
```suggestion
/// Only scan a subset of Row Groups from the Parquet file whose data
"midpoint"
/// lies within the [start, end) byte offsets. This option can be used to
scan non-overlapping
/// sections of a Parquet file in parallel.
```
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